This paper has mainly dealt with the necessity and the significance in publishing excellent textbooks during the new period of the historic development. It has also explored new ideas in textbooks production.

This article gives an analysis of the status of the textbook construction of universities, combining the training aims with the present condition of the college. It also suggests that improving textbook construction depends on strengthening leadership in this field, organizing and encouraging teachers to compile excellent textbooks and to make a study of the textbooks along with some specific suggestions on how to guide teachers to research into the textbooks.

On explicating formula ∫ k · f(x)dx=k · ∫ f(x)dx,two excellent textbooks had different limit to real number k, one book limited k≠0, another didn't limit k≠0. This article will interpret the reason in them from quotient space.

PRETCO, focusing on testing integrated language skills, communicative language ability and practical language ability, has had good backwash effects on different aspects of vocational college English teaching and learning. The notion of teaching is updated, the method of teaching is diversified, the means of teaching is modernized, and many excellent textbooks come into exist.

There are excellent textbooks available on cluster analysis which are listed in the bibliography at the end.

There are many excellent textbooks describing the concept of artificial neural networks.

References are given to several excellent textbooks available on these subjects.

Nevertheless, the authors cite a number of excellent textbooks in the end of the book for the reader who wants to pursue the subject further.

Many excellent textbooks that cover these topics are available such as those by Mano, Roth and Fletcher, etc.

The characteristics of the words used in the excellent textbook College English are discussed in comparison with the words used in Middle School English in this paper.

通过与中学英语词汇的对比，对优秀教材《大学英语》中词汇的特点进行了探讨

This article gives an analysis of the status of the textbook construction of universities, combining the training aims with the present condition of the college. It also suggests that improving textbook construction depends on strengthening leadership in this field, organizing and encouraging teachers to compile excellent textbooks and to make a study of the textbooks along with some specific suggestions on how to guide teachers to research into the textbooks.

Essentials of Linguistics" is one of the excellent textbooks for university students.How- ever, it still leaves some room for improvement. Therefore. the paper is meant to present a few sug- gestions for the solution to the problems involving the scientific nature,correctness and examples and illustrations in "Essentials of Linguistics".